h6. [[ParallelDeviceDriver]] h6(. » [[ParallelDeviceDriver SWI Calls|SWI Calls]] h6((. » Parallel_HardwareAddress h2. Parallel_HardwareAddress h5. (SWI &42EC0) |_<^{width:4em}. Entry | | |<^. - |<^. - | |_<^{width:4em}. Exit | | |<^. R0 |<^. Address of parallel controller in memory map, or 0 if no hardware present | |<^. R1 |<^. Address of routine to be called in SVC mode to do: Parallel control register = (Old value AND R1) EOR R0 or preserved if R0 was returned as 0 | h4. Use This call is for internal use only. h4. Notes Do not use this SWI Call. Use [[Parallel_Op]] instead. h4. See also * [[Parallel_Op]]